How much fluid does this cover hold?

This cover holds approximately 5 quarts of gear oil when filled to the factory fill level. The factory cover holds about 4 quarts, so you'll need slightly more when you change the fluid.

What is the purpose of the sight glass?

The sight glass allows you to easily see the oil level in the differential without removing any plugs. This helps prevent overfilling, which can cause leaks and other problems.

What is the purpose of the magnetic drain and fill plugs?

The magnetic drain and fill plugs attract and hold any ferrous particles that may be circulating in the oil. This helps to keep the oil clean and protect the bearings from wear.

aFe

aFe Power Rear Diff Cover Black w/Machined Fins 17 Ford F-350/F-450 6.7L (td) Dana M300-14 (Dually)

Name: aFe Power Rear Diff Cover Black w/Machined Fins 17 Ford F-350/F-450 6.7L (td) Dana M300-14 (Dually)
Brand: aFe
Price: 412.03 USD
Availability: InStock

$412.03

Protect your differential with this well-built cover from aFe. Features cooling fins, a sight glass, and magnetic drain plugs.

Key Features

A356-T6 cast aluminum — strong and durable
Reinforcing ribs — adds extra strength
Magnetic drain and fill plugs — captures ferrous particles to protect bearings
Oil level sight glass — prevents overfilling
Machined fins — increases surface area for cooling
Black powder-coat finish — resists corrosion

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits this vehicle

Ford F-350 Super Duty 2017-2023

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Since 1957

Family-owned

Product Details

aFe Power's new rear differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable A356-T6 cast aluminum with reinforcing ribs for maximum strength. Mounting hardware is included for a hassle-free installation. An oil level sight glass and calibration plug set to the factory level prevents overfilling of the differential. A magnetic drain plug and a deep reach magnetic fill plug are provided for maximum protection. This cover is finished with black powder-coating and machined fins for a distinctive look. 5 Quart Gear Oil Capacity: This cover has about a 5 quart gear oil capacity at the factory fill level, factory cover holds about 4 quarts. Built-in Cooling Fins: Built-in internal and external cooling fins increase surface area to maximize cooling of the differential oil. Magnetic Drain/Fill Plug: Oil Level Sight Glass: Large oil level sight glass with 1/8'' NPT calibration plug set to the factory fluid level to eliminate overfilling.